Patent US3688876A successfully refreshed from Google Patents.
US3688876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake of the floating type
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1969-09-25
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Granted: 1972-09-05
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Expires: 1989-09-25
Abstract
Abstract This is a disc brake of the floating type particularly adapted for use with motor vehicles. The brake has a fixed member disposed on one side of a rotating disc and having two outwardly extending circumferentially spaced arms, each arm having a pin extending away from the disc in the direction of the axis of rotation of the disc. A floating member straddles the disc, and includes a pair of mutually opposed friction members for engaging the disc and an actuator therefor. The floating member further has a pair of bores for engaging the pins such that the floating member is slidable on the pins. The fixed member is provided with a shoulder engaging one of the friction members for receiving the braking torque therefrom, and the braking torque from the other of the friction members is received by the floating member and is passed to the fixed member through one of the pins. There is a predetermined clearance between each of the bores and its associated pin, and the pin that receives the torque from such other friction member has less clearance with its bore than the other pin.
Inventors
- 👤 Akiyoshi Hirai
- 👤 Kaname Doi
- 👤 Takeshi Noguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:12
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/225; F16D55/226; F16D55/2265; F16D55/22655; F16D55/227; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/54
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
243 words
A disc brake of the floating type comprising a rotatable brake disc having friction surfaces on opposite sides thereof, a fixed member for receiving the torque generated when the brake is actuated, said fixed member having first and second outwardly extending arms circumferentially spaced from one another around the axis of said disc and facing one of said friction surfaces, first and second pins mounted respectively on said first and second arms and extending outwardly therefrom substantially parallel to the axis of said disc, a floating member straddling said disc, an inner friction member which is located between said first and second arms and an outer friction member which is carried by said floating member in opposed relationship to said inner friction member for engaging said disc therebetween, actuator means carried by said floating member for moving said friction members into engagement with said disc, first and second bores in said floating member substantially parallel to the axis of said disc for engaging said first pin and said second pin respectively, said bores having diameters greater than the diameters of said respective pins to provide a radial clearance therebetween, said radial clearance between said first bore and said first pin being less than said radial clearance between said second bore and second pin, so that substantially all of the torque from said outer friction member is received by said first arm through said first pin during forward and backward running of said disc.
Claim 2
Dependent Claim
243 words
A disc brake of the floating type comprising a rotatable brake disc having friction surfaces on opposite sides thereof, a fixed member for receiving the torque generated when the brake is actuated, said fixed member having first and second outwardly extending arms circumferentially spaced from one another around the axis of said disc and facing one of said friction surfaces, first and second pins mounted respectively on said first and second arms and extending outwardly therefrom substantially parallel to the axis of said disc, a floating member straddling said disc, an inner friction member which is located between said first and second arms and an outer friction member which is carried by said floating member in opposed relationship to said inner friction member for engaging said disc therebetween, actuator means carried by said floating member for moving said friction members into engagement with said disc, first and second bores in said floating member substantially parallel to the axis of said disc for engaging said first pin and said second pin respectively, said bores having diameters greater than the diameters of said respective pins to provide a radial clearance therebetween, said radial clearance between said first bore and said first pin being less than said radial clearance between said second bore and second pin, so that substantially all of the torque from said outer friction member is received by said first arm through said first pin during forward and backward running of said disc.
Claim 3
Dependent Claim
23 words
A disc brake according to claim 1 wherein resilient means is disposed in said clearance between said second bore and said second pin.
Claim 4
Dependent Claim
41 words
A disc brake according to claim 1 wherein said floating member has an opening disposed radially outwardly of said disc for permitting interchange of said friction members therethrough, said floating member being is the form of a loop surrounding said opening.
Claim 5
Dependent Claim
17 words
A disc brake according to claim 1 wherein said first pin is integral with said fixed member.
Claim 6
Dependent Claim
34 words
A disc brake as set forth in claim 1 wherein said first arm is the leading arm with respect to the direction of rotation of said disc under the forward running of the vehicle.
Claim 7
Dependent Claim
42 words
A disc brake according to claim 1 wherein said second arm directly engages said inner friction member for directly receiving all of the torque therefrom and said floating member directly engages said outer friction member for receiving all of the torque therefrom.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |